Mixing device for gaseous fuel.



A. L. REYNOLDS.

MIXING DEVICE FOR GASEOUS FUEL. APPLICATION FILED SEPT. 19, I913.

LQLQEQQ PatentedJuly3,1917.

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I ADELBEBT I REYNOLDS, OF NEW YGRK, N. Y.

MIXING- DEVICE FOR GASEOUS FUEL.

Specification of Letters Patent.

Patented July 3, 1917.,

7 Application filed September 19, 1913. Serial No. 79G,598.

To all whom it may concern:

Be 'it known that I, ADELBERT L. REY- NOLDS, a citizen of the United States, residing in the boroughof Manhattan, city, county,'. and. State of New York, have in vented certain new and useful Improvements in Mixing Devices for Gaseous Fuel, of which the following is a specification.

My invention has reference to improvements in the vaporization of gaseous fuel delivered from a carburetor to the cylinder of'an internal combustion engine.\ Internal combustion engines are notoriously ineflicient at low speeds, part of this inefficiency resulting from poor carburetion at reduced speeds. t is the aim of my device to produce a uniformly efficient explosive mixture throughout the practical range of speed of the engine with which it is associated. ,My device is particularlyapplicable to automobile or mptor-boat engines, which must contend with either a constantly changing speed or load, or both,'particularly since it is desirable to control the .speed of the motor under these varyingconditions by throttling rather than by gear-shifting. Numerous devices have been proposed for supplying an explosive mixture which will enable the en gine to be run efliciently at low speed, thus doing away with gear shifting as far as possible, but these devices are all open to the objection that when applied to existing installations they reduce the size of the open ing at the entrance to the intake pipe, and, as a consequence, seriously impair the efficiency of the engine at high speed and frequently reduce the full or overload capacity. My invention is directed to the provision of a device which will insure a delivery of the fuel into the engine cylinder in a highly vaporized state at all times, regardless of variations in the speed of the engine, and without any appreciable interference with the flow of the fuel; This I obtain by causing the particles Qfliquid to impact against one anothcn asfthey 'are passing from the carburetor into thehead-end of the cylinder.

Theresult will bethat any large globules of raw fuel will be completely disintegrated and the mixture will enter the cylinder in a finely dividedhomogeneous mass, thus in-' suring immediate and complete vaporization.

My improved vaporizing device will be.

found ready of application to any type pf engine and carburetor, and bec ause of 1ts extreme simplicity of construction W111 be found exceedingly cheap to manufacture,

and consequently capable of being placed onthe market at a very slight cost.

In the accompanyin drawings which iorm part of this speci cation, Figure 1 1s a side elevation of the mixing device shown as applied to a'carburcter at the point where the outlet pipe is connected to the intake pipe of the engine; Fig. 2 is a view in plan; Fig. 3 is an enlarged detail view showing the intake pipe in section.

Similar characters of reference refer to similar parts throughout the several views.

The reference numeral. 1 designates a carbureter of the ordinary or Schebler type, having a nozzle 2 in which is located a throttle valve 3, the valve in this instance being of the butterfly type. A pitman 4 con necting with a throttle lever, not shown, serves to open and close the valve. The sides of the nozzle 2 are formed with flanges 5 and 6 which correspond with similar flange members 7 and 8 on the end of the intake pipe of the engine for the reception of the securing bolts 10 and 11, which couple the carburetor and the intake pipe. At the point of connection between the outlet pipe of the carbureter and the intake pipe, I provide a plate 12' secured thereto by means of the bolts 10 and 11. In orderto insure a tight joint, I may provide gaskets or washers 13 and 14 located on each side of the plate. As shown, the plate 12 is in the form of a thin sheet of metal having bolt holes 15 and 16 and a central orifice 17 correr gonding in size with the bore of the intake pipe. Projecting from theplane ot' the plate and into the intake pipe are a suitable number of homologously disp sed blades 18 and 19. The orifice and the blades are formed by cutting a central opening in members which depend from the periphery of the orifice and project into the intake pipe. It will be obvious that the blades and the orifice may be formed in one operation by the use of a suitable die. .In the present LOO instance I have shown a pair of blades projecting from opposite points on the Wall of the orifice, but I do not desire to limit myself in any way to this construction, as it is obvious that the number of blades may be increased or diminished at will without effecting'a change in principle of the opera rtion of my device. The operation of the device is as follows: in The valve 3 having been opened by means of the pitman. d and throttle lever, the mixture is drawn through the outlet pipe 2 of the carburetor until it strikes the blades 18 and 19, from whence it will be divided into a 't" of streams, owing to the peculiar dispositmn of the blades with respect to the T entral portion of the current 1 the opening between the blades without any interference whatsoever; other portions of the current will be deflected toward the wall of the pipe, owing to the inclination of the blades to the axis of the orificeyand to still another portion will be imparted an angular deflection with respect to the said axis, due to the inclination of the blades from. the plane of the ori fice. The combined efiect of all these several currents, having different directions of movements will he to produce a vortical act1 o 1n the current which will cause the partices of liquid or otherwise not completely vaporized fuel to impact against each other and thus be disintegrated into exceedingly .uiinutc particles. The general eii'ect of tlie relation 02 irts is such thatthe central portion of the ascending gas column traveling through same of partially rarefied air will entra those portions oi. the mixture current. nich strike the under-surface of the :1 ined blades, which, owing to their dispo ation, form an inwardly converging spiral and mpart-a like movement to the cent-ml p: on of the current. A portion of the mixture current tends to ascend un- 7 :1 through the central opening bei V, on the blades 18 and 19, but other porne, striliing the under surfaces of the blades will be deflected along the resultant of their angles of inclination and the lain. eral helical disposition of their surfaces, throw'ng the particles in a converging spiral toward the core of the fixture 1 into the zone of highest speed, th..s setting up a vertical action about the central otthe intake pipe instead of iii throwing the particles to the outside periphery of the intake where they are subject to condensation. Those particles of fuel that pass between the blades will be entrained in the air eddies induced by the blades and carried into the rotating movement set up in the mixture column. The effect of the device is thus to increase vaporization, to eliminate masses of liquid fuel Y and to permit the'combustible miirture to be drawn into the engine in ahighly homogeneous condition and thoroughly mfixed with air. It will be noted that owing to the fact that the blades project from the wall of the orifice in the plate, the bore of the intake pipe is not materially diminished, and consequently the efiicienoy of the engine, when running at high speed, is not impaired, a disadvantage present in all similar devices of which the inventor has knowledge.

Although I have described certain specific embodiments of my invention and a particular application thereof, yet it will be understood that such description. is only for the sake of illustration, and that my" inventioh' is capable of broad application and wide modification without ,departing from the spirit and scope thereof.

Having thus described my invention, I claim: l. A device of the character described comprising a plate having a central orifice and having a pair of opposed symmetrically disposed homologous vanes therein integral with said plate and bent out of the plane thereof, each vane being in the form of'a spiral crescent, the lines of whoseiouter surface lie in the surface of a cone, said surfaces ADELBERT L. REYNOLDS.

Witnesses Snwann DAVIS, EDWARD S. WHITE. 

